______ to forget is a good way to solve our problems and we can also deal with them by ______ of something worse.

A．Learn; think

B．Learning; think

C．Learning; thinking

D．Learn; thinking

（）指凡改变电力系统运行方式的倒闸操作及其他较复杂操作项目，均必须填写操作票的制度。

A、操作命令和操作命令复诵制度

B、操作票制度

C、操作监护制度

D、操作票管理制度